I'm a late arrival to this thread, having only recently updated my laptop to Catalina. Was suddenly unable to use the TPplc app because of the 'osascript' message, but lukcily found this thread...

I'm using the TL-WPA7510 kit which consists of a PA7010 adapter and a WPA7510 extender. I've added another extender to my setup, which is a slow old PA4010. My ethernet connection to the PA7010 is a...